Comparison Between Ptp Power Profiles; Domain Number; Network Protocol; Operation Mode - GE Reason RT430 Technical Manual

Charter 6 – Configuration

Comparison between PTP Power Profiles

Domain number

Network protocol

Operation mode

RT430/434

P2P Default: profile partly configurable, with some predetermined parameters,
which cannot be modified. The non-editable characteristics are shown in its
respective fields. The non-editable characteristics are.
Domain number 0.
o
Priority 128 in both Ethernet ports.
o
Operation as master only.
o

Custom Profile: profile with all features freely configurable by a user.

Table 13: Comparison between PTP Power Profiles

Network Protocol
Delay Mechanism
Operation Mode
TLV messages
Grandmaster
Priority
The RT430/434 allows configuring the domain number to be identified by the PTP
clock, so it only answers messages from this domain. The domain number field
allows selecting a domain number between 0 and 255 which the unit will recognize.
This field defines the network layers where the PTP protocol will be applied. It is
possible to use PTP protocol in a network layer with IEEE 802.3 Ethernet (layer 2) or
UDP/IPv4 (layer 3) connection.
If Ethernet (layer 2) is selected, VLAN may be used.
The field operation mode allows configuring the operation mode according to the
form RT430/434 sends its messages, as follows:

One-step: Sync information and timestamp information are sent in the same
data packet;

Two-step: Sync information is sent in one data packet, and timestamp
information is sent in another data packet.
IEEE C37.238 PTP Power
Profile
Ethernet Layer 2
Peer-to-Peer (P2P)
One Step
Required
Equal for all Grandmaster
RT430/434
IEC 61850-9-3 PTP Profile
for Power Utility
Automation
Ethernet Layer 2
Peer-to-Peer (P2P)
One or Two Step(s)
Optional
Selectable, allowing
choose the
grandmaster for holdover
conditions
to
best
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